Car-bolster.



PATENTED JAN. 23, 1906.

A. CAMPBELL. CAR BOLSTER.

APPLICATION rmm saw. 18. 1905.

M. in WWW" i @Zzzaii IINITED STATES Pi iIENT OFFICE.

ARGYLE CAMPBELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ENTER- PRISE RAILWAY EQUIPMENT COM PORATION OF ILLINOIS.

PANY, OF CHICAGO, ILLINOIS, A COR- CAR-BOLSTER.

Specification of Letters Patent.

Application filed September 18, 1905. Serial No 279,033.

Patented Jan. 23, 1906.

The object of my 1nvent1on 1s to provide a metal car-bolster which shall possess a minimum of weight with a maximum of strength in a bolster or a iven size of cars and which shall be articu arly strong at its ends against si e strain.

My invention consists in mechanism which is capable of accomplishing the above objects, which can be easily and cheaply made,

-. which is eflicient in o eration, and not readily liable to get out order.

In detail it consists in a novel means for fastening the outside ends of the upper and lower members of the bolster together.

the usual manner to allow the car to go,

It also consists in details of construction, which will be hereinafter more fully described and claimed.

In the drawings, Figure 1 is a side elevation, and Fig. 2 is a plan View, of a bolster, illustrating my invention in its preferred form. Fig. 3 is an enlarged end View of the bolster, showing the method of construction by which the top and bottom members of the bolster are secured together.

My bolster consists of a horizontal upper member 10, preferably a channel-iron with the flanges turned downward, extending from side to side of the car, as shown, and a lower member 11, consisting of another channel-iron of less width than the channeliron 10 with its flanges extending u ward, also extendin from side to side-of t e car. These channe -irons have their ends secured together in the manner which will be hereinafter described. The upper and lower members heretofore described are separated in the middle of the car by a post or su port 12, which may be a casting of any usua form or shape. On the top of the bolster is secured a center casting 13, to which the car-body (not shown) is attached in such a way that the bolster may turn with reference to the car in around a curve in the track. On the upper,

' part of each end of the bolster I provide any suitable form of side bearing 15. In the preferred form I'provide, as illustrated, an upper member 10, made from a twelve inch channel, thirty five pound weight having five and five sixteenthsinch flanges 18 and three-fourths-i'nch webs 19, andI'provide a lower member 11, consistin of a ten-inch channel, thirty-five-poun weight, having three and five-sixteenths inch flanges 20 and eightytwo one-hundredths.

inch web 21. As will be seen from Fig. 3 and from a study of the channels, the lower channel 1 1 is narrower than the upper channel 10, and to secure the ends of the two members together, while providing some depth at the ends of the bolster, thereby stiffenin it, I provide means which I will now descri e.

I provide plates 22, ada ted to fit on the outside of the ends of the ower channel, as shown in Fig. 3, and I out the plates away so that they fit inside of and snugly fit against the insides of the flanges 18 of the channels 10', as shown. These plates 22 are, as shown in Figs. 1 and 2, substantially the length of the portions of the members 10 and 1 1, which are secured together at the ends of the bolster, and in order to give the bolster end depth are of approximately the depth of the flanges of the two channels, as shown. Outside of the flanges of the-upper. channel-iron and the special plates just described I place reinforcing angle-irons or other members 23.

construction of the bolster, I place in each end and between the webs 19 and 21 of the respective members of the bolster a Z-bar 28 and secure it to the upper web 19 by rivets 30 and to the lower web 21 by rivets 31, as shown. An I-beam or channel-irons may be substituted in place of this Z-bar 26 without departing from my invention.

On examination of the drawings, and particularly Figs. 1 and 3, it will be seen that tl;1 e .1'1pper and lower members of the bolster eir flanges do not substantially overlap each other at any point in their length, with the result that the depth, and consequently the strength, of the bolster at its end is not sacrificed, while at the same time I maintain the cross-section of the bolster at its end in substantially rectangular form of the same or greater width than the widest of the two cross members of the bolster, thereby increasin the strength of the bolster at its end.

y the construction here shown I provide a very rigid end construction for the bolster, which enables me to use top and bottom members of diflerent widths, thereby saving weight and metal in the bolster while maintaining strength. I also thus form a bolster which is particularly strong against side strain.

Having thus described my invention, what Ic-laim as new, and desire to secure by Letters Patent, is a 1. In a bolster, the combination of an up per member extending from end to end of the bolster, downwardly-turned flanges at the ends of the said member, a lower member extending from end to end of the bolster, upwardly-turned flanges at the ends of said member, one of said members being broader than the other, and neither cross member or its flanges substantially overlapping parts of the other member, a suitable brace or support at the center of the bolster between said upper and lower members, and a set of plates in-, serted inside the end flanges of the larger member and outside of the end flanges of the narrower member at the ends of the bolster and separatemeans for securing said plates {)0 the flanges of the upper and lower memers.

2. In a bolster, the combination of an u per member extending from end to end of t 'e bolster, downwardly-turned flanges atthe ends of-the said member, a lower member extending from end to end of the bolster, upwardly-turned flanges at the ends of said member, one of said members being broader than the other, and. neither cross member or its flanges substantially overlapping parts of the other member, a suitable brace or support at the center of the bolster between said upper and lower members, and a set of plates inserted inside the end flanges of the broader member and outside the end flanges of a narrower member at the ends of the bolster, separate means for securin said plates to the flan es of the upper and lower members, and rein orcing means between the flanges secured to both the upper and lower members.

3. In a bolster, the combination of an upper member extending from end to end of the olster, downwardly-turned flanges at the ends of the said member, a lower member extending from end to end of the bolster, upwardly-turned flanges at the ends of said member, one of said members being broader than the other neither member or its flanges overlapping parts of the other member, a suitable brace or support at the center of the bolster between said upper and lower members, a set of platesinserted inside the end flanges of the larger member and outside of the end flanges of the narrower member said plates being of such a thickness that they and the narrower members together occupy a horizontal space substantially equal to the width of the broader member, vertical reinforcing members adjacent to the sides of the ends of the bolster thus far described and independent separate mechanisms for securing the flan es of each cross member to the adj acent p late and reinforcing member.

In witness whereof I have hereunto subscribed my name in the presence of two witnesses.

ARGYLE CAMPBELL.

Witn esses CAROLYN RAFTERY, DWIGHT B. OHEEVER. 

